Grep multiple patterns


 
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# 1  
Old 09-23-2005
Grep multiple patterns

Hi,

Can we grep multiple patterns in UNIX.
for example:
cat /x/y/oratab | grep -i "pattern1|pattern2" .... etc

I require the syntax for multiple patterns. | is not working as I explained in example.

Malay
# 2  
Old 09-23-2005
try !!!!
cat /x/y/oratab | egrep -i "pattern1|pattern2"

Shihab
# 3  
Old 09-23-2005
Depending on your version of grep, this might also work:

cat /x/y/oratab | grep -i -e pattern1 -e pattern2
# 4  
Old 09-23-2005
Why the UUOC ?

Wouldnt this work ?

Code:
grep -i -e pattern1 -e pattern2 /x/y/oratab

vino
# 5  
Old 09-25-2005
or ...

Code:
egrep -i "str1|str2" /your/file

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